1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ghella [55]
3 years ago
11

Classer les particules suivantes par ordre chronologique d’apparition dans l’Univers: atome d’hydrogène–proton–noyau d’hydrogène

Chemistry
1 answer:
Snowcat [4.5K]3 years ago
4 0

Answer:

she said hola como esta she said knonichwa

You might be interested in
Which type of radioactive decay produces
sladkih [1.3K]
Which type of radioactive decay produces particles with the most mass? Alpha.
6 0
3 years ago
A mixture of helium, nitrogen, and oxygen has a total pressure of 752 mm Hg. The
NISA [10]

Answer: The partial pressure of oxygen in the mixture is 321 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_{He}+p_{N_2}+p_{O_2}

Given : p_{total} = total pressure of gases = 752 mm Hg

p_{He} = partial pressure of Helium = 234 mm Hg

p_{N_2} = partial pressure of nitrogen = 197 mm Hg

p_{O_2} = partial pressure of oxygen = ?

Putting in the values we get:

752mmHg=234mmHg+197mmHg+p_{O_2}

p_{O_2}=321mmHg

The partial pressure of oxygen in the mixture is 321 mm Hg

5 0
3 years ago
Observando la siguiente reacción química: 3Fe + 4H2 O Fe3 O4 + H2(g) 4. Contesta ¿Por qué si se lleva a cabo en el recipiente ab
wolverine [178]

Answer:

La reacción se convierte en reversible porque en un recipiente cerrado el gas no escapa y puede reaccionar con el óxido

Explanation:

Basados en la reacción:

3Fe + 4H₂O → Fe₃O₄ + 4H₂(g)

<em>3 moles de hierro con 4 moles de agua producen 1 mol de óxido de hierro y 4 moles de hidrógeno (gas)</em>

Cuando la reacción se está produciendo con un recipiente abierto, todo el gas de hidrógeno está escapando a la atmósfera y no habrá forma de que reaccione con el óxido de hierro.

Pero, si el recipiente está cerrado, el hidrógeno no podrá escapar y podrá reaccionar con el óxido de hierro, así:

Fe₃O₄ + 4H₂(g) → 3Fe + 4H₂O

De esta manera,

<h3>la reacción se convierte en reversible porque en un recipiente cerrado el gas no escapa y puede reaccionar con el óxido</h3>
5 0
3 years ago
Why the enthalpy of Ba(oh)2 +h2so4 is greater than Ba(oh)2 + hcl?​
Rina8888 [55]

Answer:

Explanation:

To break apart a molecule of H2So4 is much higher than HCl although HCl is an ionic bond it is only bonded to one hydrogen. While H2So4 is bonded to two of them, aswell as its structure being much more complex. The energy to break Ba(h)2 is equal in both.

4 0
2 years ago
Is HCL addition or removal​
fgiga [73]
Additional it is bc chem
5 0
3 years ago
Other questions:
  • What mass of copper is deposited when a current of 10.0a is passed through a solution of copper(ii) nitrate for 30.6 seconds?
    12·1 answer
  • What is the difference between extensive and intensive physical properties?
    10·1 answer
  • The heaviest commonly used United States coin is the half dollar, which has a mass of 11.340g. The lightest United States coin i
    15·1 answer
  • What is the stable configuration of the nitride ion (N^-3)
    10·1 answer
  • Which of the following would be a qualitative observation? A The volume of the solution is 25 ml B The solution turned blue C Th
    13·1 answer
  • Boiling occurs when molecules being changed from liquid to gas plz tell me the answer true or false
    6·1 answer
  • Which statement correctly describes two forms of oxygen, O2 and 03?
    15·1 answer
  • Help Please! its another cell functions
    15·2 answers
  • What three types of noncovalent bonds help proteins fold?.
    10·1 answer
  • If an acid is added to different samples of buffered water, the sample with the
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!